/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.dialer.list;

import static android.Manifest.permission.READ_CONTACTS;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.Loader;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.provider.ContactsContract.QuickContact;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;

import com.android.contacts.common.list.ContactEntryListAdapter;
import com.android.contacts.common.list.ContactEntryListFragment;
import com.android.contacts.common.list.ContactListFilter;
import com.android.contacts.common.list.DefaultContactListAdapter;
import com.android.contacts.common.util.PermissionsUtil;
import com.android.contacts.common.util.ViewUtil;
import com.android.dialer.R;
import com.android.dialer.util.DialerUtils;
import com.android.dialer.util.IntentUtil;
import com.android.dialer.widget.EmptyContentView;
import com.android.dialer.widget.EmptyContentView.OnEmptyViewActionButtonClickedListener;

/**
 * Fragments to show all contacts with phone numbers.
 */
public class AllContactsFragment extends ContactEntryListFragment<ContactEntryListAdapter>
        implements OnEmptyViewActionButtonClickedListener {

    private static final int READ_CONTACTS_PERMISSION_REQUEST_CODE = 1;

    private EmptyContentView mEmptyListView;

    /**
     * Listen to broadcast events about permissions in order to be notified if the READ_CONTACTS
     * permission is granted via the UI in another fragment.
     */
    private BroadcastReceiver mReadContactsPermissionGrantedReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            reloadData();
        }
    };

    public AllContactsFragment() {
        setQuickContactEnabled(false);
        setAdjustSelectionBoundsEnabled(true);
        setPhotoLoaderEnabled(true);
        setSectionHeaderDisplayEnabled(true);
        setDarkTheme(false);
        setVisibleScrollbarEnabled(true);
    }

    @Override
    public void onViewCreated(View view, android.os.Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        mEmptyListView = (EmptyContentView) view.findViewById(R.id.empty_list_view);
        mEmptyListView.setImage(R.drawable.empty_contacts);
        mEmptyListView.setDescription(R.string.all_contacts_empty);
        mEmptyListView.setActionClickedListener(this);
        getListView().setEmptyView(mEmptyListView);
        mEmptyListView.setVisibility(View.GONE);

        ViewUtil.addBottomPaddingToListViewForFab(getListView(), getResources());
    }

    @Override
    public void onStart() {
        super.onStart();
        PermissionsUtil.registerPermissionReceiver(getActivity(),
                mReadContactsPermissionGrantedReceiver, READ_CONTACTS);
    }

    @Override
    public void onStop() {
        PermissionsUtil.unregisterPermissionReceiver(getActivity(),
                mReadContactsPermissionGrantedReceiver);
        super.onStop();
    }

    @Override
    protected void startLoading() {
        if (PermissionsUtil.hasPermission(getActivity(), READ_CONTACTS)) {
            super.startLoading();
            mEmptyListView.setDescription(R.string.all_contacts_empty);
            mEmptyListView.setActionLabel(R.string.all_contacts_empty_add_contact_action);
        } else {
            mEmptyListView.setDescription(R.string.permission_no_contacts);
            mEmptyListView.setActionLabel(R.string.permission_single_turn_on);
            mEmptyListView.setVisibility(View.VISIBLE);
        }
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
        super.onLoadFinished(loader, data);

        if (data == null || data.getCount() == 0) {
            mEmptyListView.setVisibility(View.VISIBLE);
        }
    }

    @Override
    protected ContactEntryListAdapter createListAdapter() {
        final DefaultContactListAdapter adapter = new DefaultContactListAdapter(getActivity()) {
            @Override
            protected void bindView(View itemView, int partition, Cursor cursor, int position) {
                super.bindView(itemView, partition, cursor, position);
                itemView.setTag(this.getContactUri(partition, cursor));
            }
        };
        adapter.setDisplayPhotos(true);
        adapter.setFilter(ContactListFilter.createFilterWithType(
                ContactListFilter.FILTER_TYPE_DEFAULT));
        adapter.setSectionHeaderDisplayEnabled(isSectionHeaderDisplayEnabled());
        return adapter;
    }

    @Override
    protected View inflateView(LayoutInflater inflater, ViewGroup container) {
        return inflater.inflate(R.layout.all_contacts_fragment, null);
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        final Uri uri = (Uri) view.getTag();
        if (uri != null) {
            QuickContact.showQuickContact(getContext(), view, uri, null,
                    Phone.CONTENT_ITEM_TYPE);
        }
    }

    @Override
    protected void onItemClick(int position, long id) {
        // Do nothing. Implemented to satisfy ContactEntryListFragment.
    }

    @Override
    public void onEmptyViewActionButtonClicked() {
        final Activity activity = getActivity();
        if (activity == null) {
            return;
        }

        if (!PermissionsUtil.hasPermission(activity, READ_CONTACTS)) {
            requestPermissions(new String[] {READ_CONTACTS}, READ_CONTACTS_PERMISSION_REQUEST_CODE);
        } else {
            // Add new contact
            DialerUtils.startActivityWithErrorToast(activity, IntentUtil.getNewContactIntent(),
                    R.string.add_contact_not_available);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions,
            int[] grantResults) {
        if (requestCode == READ_CONTACTS_PERMISSION_REQUEST_CODE) {
            if (grantResults.length >= 1 && PackageManager.PERMISSION_GRANTED == grantResults[0]) {
                // Force a refresh of the data since we were missing the permission before this.
                reloadData();
            }
        }
    }
}